A vessel engaged in diving operations not making way through the water - lights

Description of scenario:
Type of vessel: Vessel engaged in diving operations not making way through the waterTime of the day: From sunset to sunrise and from sunrise to sunset in restricted visibility

Rule(s) to be applied:Rule 27
(Vessels not under command or restricted in their ability to manoeuvre)

Applying the Rule(s) and comments:
In accordance with Rule 27
(e)(i) (Vessels not under command or restricted in their ability to manoeuvre), whenever the size of a vessel engaged in diving operations makes it impracticable to exhibit all the lights prescribed in Rule 27
(d), three all-round
lights in a vertical line where they can best be seen shall be exhibited. The highest and lowest of these lights shall be red and the middle light shall be white.

Lights positions:

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